deadlocks - definizione. Che cos'è deadlocks
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Cosa (chi) è deadlocks - definizione

STATE IN WHICH MEMBERS ARE BLOCKING EACH OTHER
Livelock; Deadlocks; Circular wait; Live-locks; Live-lock; Deadlock avoidance; Deadly embrace; Distributed deadlock; Deadlock detection; Coffman conditions; Live lock; Deadlocking
  • 
(A) Two processes competing for one resource, following a first-come, first-served policy.

(B) Deadlock occurs when both processes lock the resource simultaneously.

(C) The deadlock can be ''resolved'' by breaking the symmetry of the locks.

(D) The deadlock can be ''prevented'' by breaking the symmetry of the locking mechanism.
  • Four processes (blue lines) compete for one resource (grey circle), following a right-before-left policy. A deadlock occurs when all processes lock the resource simultaneously (black lines). The deadlock can be resolved by breaking the symmetry.
  • Both processes need resources to continue execution. ''P1'' requires additional resource ''R1'' and is in possession of resource ''R2'', ''P2'' requires additional resource ''R2'' and is in possession of ''R1''; neither process can continue.
  •  The deadlock can be resolved by cancelling and restarting the first process.}}

deadlock         
(deadlocks)
If a dispute or series of negotiations reaches deadlock, neither side is willing to give in at all and no agreement can be made.
They called for a compromise on all sides to break the deadlock in the world trade talks...
N-VAR
deadlock         
n.
1) to reach a deadlock
2) to break a deadlock
deadlock         
¦ noun
1. a situation in which no progress can be made.
2. Brit. a lock operated by a key, as distinct from a spring lock.
¦ verb
1. bring to a deadlock.
2. Brit. secure with a deadlock.

Wikipedia

Deadlock

In concurrent computing, deadlock is any situation in which no member of some group of entities can proceed because each waits for another member, including itself, to take action, such as sending a message or, more commonly, releasing a lock. Deadlocks are a common problem in multiprocessing systems, parallel computing, and distributed systems, because in these contexts systems often use software or hardware locks to arbitrate shared resources and implement process synchronization.

In an operating system, a deadlock occurs when a process or thread enters a waiting state because a requested system resource is held by another waiting process, which in turn is waiting for another resource held by another waiting process. If a process remains indefinitely unable to change its state because resources requested by it are being used by another process that itself is waiting, then the system is said to be in a deadlock.

In a communications system, deadlocks occur mainly due to loss or corruption of signals rather than contention for resources.

Esempi dal corpus di testo per deadlocks
1. After 1'24, Democrats hated deadlocks even more than they hated rival Democrats.
2. He denied that there were deadlocks in negotiations as reported by some media.
3. It noted: "Security features available now include electronic immobilisers, deadlocks, alarms and security glass.
4. It is the power to assume Justice O‘Connor‘s role of breaking deadlocks in major cases.
5. Or, to avoid that situation, O‘Connor might decline to break deadlocks.